Railway truck and rail



IHHH E@ V m I E. R. EDSON RAILWAY TRUCK AND RAIL Filed sept. 2'. 1926 l IH III

Dec. 2'8, 192e.

Patented Dec. 28K, 1926.

UNlTED STATES 1,612,27i PATENT OFFICE.

ELMER ROCKW'OODYEDSON, OF PORTLAND, OREGON.

RAILVAY TRUCK AND RAIL.

Application led September 2, 1926. Serial No. 133,98.

My invention relates to an improvement in railway trucks and rails with the particular object of preventing derailment (especially when cars are moving at super-speeds) by means of a safety-wheel attached to the truck-frame and operating on the under surface of the flanged tread of a special flanged rail. f

I attain this object by employment of the mechanism illustrated in the accompanying drawings. Figure l is a side view of the railway truck, position on the under surface of the flange of the safety-rail. Figure 2 is a vertical cross-section on the plane 2-2 (see Fig. l) illustrating the construction of the safetywheel device, the form of the flange-rail, and the operation of the safety-wheel in relation to this rail. Figure 3 is a plan view (on horizontal section) of a portion of the truck on the plane 3-3 (see Fig. l). Figure l is a plan view (horizontal section) of a portion of the truck on the plane dell (see Fig. l).

Similar reference symbols indicate similar parts in all the drawings.

The following is a more detailed description of the drawings-and parts shown therein :-Figure 1 is a side view of the railway truck. A portion of the car-body is represented diagrammatically by the part The truck wheels (Z2) are resting on the rail (e).` The ends of the axles are shown as (c) The part (a) is a lateral beam in the truck frame. The remainder of the drawing represents special features of construction for which it is desired to obtain patent. Directly in the middle of this drawing is seen a flat, vertical metal plate (L) which projects slightly above the upper margin of the truck frame and extends downwards almost to the lower margin of the truck frame. On the inner aspect of this member (h) the safety-wheel (g) is mounted, being journaled therewith by a proper bearing for the stub-axle The member or plate operates in a channel which permits movement in a vertical direction only, the channel being formed by attaching a guide-plate to the outer surface of the upper truck-beam (a) by means of the bolts (7c), and also (below) by attaching the guide-plates (Z) to the lower portion of the truck frame by means of the bolts (m). Slightly above the center of the plate (it), and on its outer surface, is placed showing the safety wheel inv a horizontal bracket (In) which contains a pocket at either end for seating the upper ends of the coil-springs (p), the bracket being securely .fastened to the plate (it) by means of bolts The lower ends of the springs are seated in pockets located in the lower brackets (g) which are a part of the truck frame proper, and are therefore immobile. It can readily be seen, therefore, that the safety wheel (g) is mounted upon a base-plate (It) which permits a certain degree of vertical movement in its channelled bearing, such movement being limited and regulated by the springs (p) which act as a buffer between the upper bracket (n) and the lower' brackets The result of such construction is, that when the truck -is moving at high speed and bounces up from the track, the wheels (b) cannot be derailed because of the safety-wheel (g) operating along the under surface of the flange Also, unnecessary jarring and strain are prevented by the springs (p) which are compressed when the main truck frame moves upwards, and as the safety-wheel is lowered as to its relative position on the truck frame.

Figure 2 is a vertical cross-section of the truck frame, safety-wheel and flange-rail, on the line 2-2 (see Fig. 1). The precise shape of the flange-rail (e) is shown in this drawing, the outer lip of the tread being extended outwards in order to afford a flanged tread on its under surface for the safety-wheel (g). Also, the outer surface of the web and base of the rail is vertically straight in order to provide proper space for the operation of the safety-wheel. It should be noted that the safety-wheel does not, ordinarily, come in actual contact with the flange, for this wheel is only intended to actively enga-ge the rail when the truck wheels (In) bounce or raise from the track.

The vertical sliding base-plate (it) is shown retained in its upper channelled bearing between the truck-beam and the upper guide-plate rlhe springs (p) are seated in pockets in the upper bracket (a) and in the lower brackets The upper bracket is secured to the member (7L) by the bolts (o). The lower brackets (q) are an integral part of the truck frame proper. At the extreme lower part of the drawing, the lower guide-plates (Z) are shown secured to the truck-frame by the bolts Figure 3 is a plan view taken on the plane 3-3 (see Fig. This show-s the upper bracket with :a 'pocket et .either end for the reception o the upper part of the coiled springs (p), the .bracket being `secured to the member (71) by 'the 'bolts (0'). The relation of this bracket to the truck :freine (a) ls also shown.

Figure 4 is a plan view of the lower part of the truck-frame, on the plane 4 4 (eee Eig] l). The member (IL) 4is shown, with a bearing :tor che stub-.shaft (i) of the safety-Wheel (g). The lower guidepl-ates are lirlnly .secured to :the `truck-infame (a) by the bolts (m) and ferm a Channel for tbe member (IL) Sto slide in.

The particular l-:ind fot spring employed to regulate the vertical 'movement -oi the member ('71,) ('Wli'ieli carries tliesa-iety-Wlieel (g1) Inountedfon it) is not essential. A lent' spring` Would/also answer the purpose.

fin essentiel feature `oli the device is fthe fact tl-ie1neinber (la) (carrying the safety- Wlieel?) @an readily/be vremoved by unboltin-g and detael'iing 1the lguide-pllatee `(.73) and (l).

It should be clearly noted lthat Itbe flanged mil `is u .necessary part Lof this complete safety device for operation of a railway truck, and Consequently that patent to saine can be claimed 'as a join-'der of inventions as per paragraph 41 of the Rules of Practice'.

Eeving given this description of the several ieegtures oft any invention, I claim lie combination, in a railway truck of a satety-fvwheel mounted on `amer-tical base plete :by Y ineens of La .stubfsheft v;pr-o,.p.erly journzrled therein; .seid buseplate having .a limited range of vertical motion in :a channel liorrned vby .guide-plates Secured to the tru l; iruine, 21nd being provided with -Sprins .to regulate Such motion smoothly; 

